To maximize your Key Vault through put rates, here are some recommended guidelines/best practices for maximizing your throughput: Ensure you have throttling in place. Client must honor exponential back-off policies for 429's and ensure you are doing retries as per the guidance below. Divide your Key Vault traffic amongst multiple vaults and different regions. Use a separate vault for each security/availability domain. If you have five apps, each in two regions, then we recommend 10 vaults each containing the secrets unique to app and region. Reference: https://docs.microsoft.com/en-us/azure/key-vault/general/overview-throttling